What this means
The IEEE assigned the MA-L block 3C0CDB to UNION MAN TECHNOLOGY CO.,LTD. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 3C:0C:DB, it is UNION MAN TECHNOLOGY CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 3C0CDB?
3C0CDB is registered to UNION MAN TECHNOLOGY CO.,LTD in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. UNION MAN TECHNOLOGY CO.,LTD's block covers 16,777,216 addresses.
What devices use 3C0CDB?
Any network device with a MAC address starting 3C:0C:DB was manufactured by or for UNION MAN TECHNOLOGY CO.,LTD.